package day7.pm;

public class Exec10 {
    public static void main(String[] args) {
        int[] data = new int[19];
        data[0] = 1;
        data[1] = 1;
        for(int i = 2; i < 19; i ++){
            data[i] = data[i - 1] + data[i - 2];
        }
        System.out.println(data[18]);
    }
}
